Tree Selection - City of Dickinson

Tree Selection
Guide
City of Dickinson
Trees alter the environment in
which we live by moderating climate,
improving air quality, conserving
water and harboring wildlife. Trees
also add to the beauty and value of
property. However, no one tree is perfect
for all locations and
purposes.
Much too often, the
wrong tree is selected for a
particular site which offers
the owner little chance for a
successful planting. The
following information can aid
in the selection of trees and
assist in growing healthier
trees. Planting the right tree
in the right place insures success.
Tree Planting Considerations
There are many factors which must be considered prior to
selection. What is the intended function of the tree? Is it
intended as a specimen, screen, border, shade or street tree?
Trees should not be placed where they will interfere with
utilities.
Tree Height, Spread and Shape
Tree size may vary due to genetic potential of the plant and
the growing conditions provided. Knowing the mature size
and shape of a tree is necessary in choosing the proper
planting location. A common problem is planting trees too
close together or too close to buildings.
Growth Rate
This will vary greatly with culture and environmental
conditions under which the tree grows. Proper planting,
adequate water, fertilization, mulching and freedom from pests
will encourage growth. General guideline: slow—1 foot or
less/ year; medium—1-2 feet/year; fast—over 2 feet/year.
Cold Hardiness
The United States Department of Agriculture places
nearly all of North Dakota in zones 4a (-25 F to 30 F) and 3b
(-30 F to -35F) on the USDA Plant
Hardiness Zone Map. Hardiness zone maps are based upon
average annual minimum temperature experienced at weather
stations over a period of years. Therefore, woody plants used
in North Dakota should be able to withstand temperatures of 25 F to -35 F to be considered winter hardy.
Soil Conditions
Trees need a minimum of six inches of topsoil for
growth; 15 inches or more is better. Most trees prefer medium
loamy-to-sandy soil textures with good moisture and drainage.
In our area, many problems have been encountered when
planting certain trees in heavy clay soils. Soil conditions need
to be considered before making final selection of trees to
plant.
How to Plant Trees so They Survive
and Thrive
What to Plant and Where
Plant trees that are of the proper size class, that are
acclimated to the site and can provide the desired effect, plant
them where they have the best chance to survive and thrive
and have the best chance of accomplishing the desired
function.
Pruning the Tree to be planted
Prune out only broken, dead or crushed roots and broken
branches—do not cut the tops back. Do shaping or corrective
pruning after the trees have become well established, usually
in year two or three.
Planting Hole
The planting hole should be wider than deep, saucer
shaped, not cup shaped, at least 2-3 times the width of the
rootball. Loosen the soil beyond the hole.
Planting Depth
Plant the tree at the same depth as it was grown in the nursery.
Do not bury grafts.
Backfill and Tamping
Backfill with the same soil that is taken out of the hole.
Adding organic material or fertilizer to the backfill is usually
not desirable. Add backfill gradually and tamp gently to avoid
root damage. Watering helps to settle the soil and to remove
air pockets.
Staking
Stake only if necessary. Large caliper nursery stock may
require staking. Allow for several inches of sway. Do not tie
anything tightly around the trunk. Remove staking after one
year.
Controlling Competition
Weeds and grass need to be controlled to assure initial
survival. Grasses, especially quack and brome grasses, provide
the most severe competition for trees.
Mulching
Mulching controls competition, conserves moisture, keeps soil
temperatures stable, keeps lawn mowers and string trimmers
away, and reduces soil compaction. A 3-4 inch mulch depth is
highly recommended. Keep mulch 2 inches from the trunk
of the tree.
Small Trees—Deciduous
PALIBIN DWARF KOREAN LILAC – Syringa
meyeri ‘Palibin’
AMUR MAPLE – Acer
tataricum ssp. Ginnala
Planting Code #2
Planting Code #2
Hardiness zone: 3
Height: 15-20 feet
Spread: 15-18 feet
Growth rate/form:
medium/rounded
Fall color: yellow to red
Cultivars: 'Flame’, ‘Embers’,
‘Redwing’
DOUBLE FLOWERING PLUM– Prunus triloba
‘Multiplex’
Planting Code #2
Hardiness zone: 3
Height: 8-12 feet
Spread: 8-10 feet
Growth rate/form: medium/oval to round
Fall color: yellow to bronze
Cultivar: 'Multiplex'
Additional notes: beautiful double pink flowers in early
spring, also known as Rose Tree of China
(DWARF) FLOWERING CRABAPPLE – Malus
species
Planting Code #2
Hardiness zone: 4
Height: 6-15 feet
Spread: 6-15 feet
Growth rate/form: slow
to medium/oval to
rounded
Fall color: green
Cultivars: ‘Canzam’
Camelot® (10 feet);
‘Coralcole’
Coralburst® (8 feet); ‘Select A’ Firebird® (5 feet); ‘Guinzam’
Guinevere® (8 feet); ‘Lansam’ Lancelot® (8 feet, gold fruit);
‘Tina’ (6-8 feet)
Additional notes: selections vary in disease tolerance
(Fire blight and apple scab); check with local nurseries for
other selections and disease resistance information; cultivars
may vary in winter hardiness
JAPANESE TREE LILAC –
Syringa reticulate
Planting Code #2
Hardiness zone: 3
Height: 15-20 feet
Spread: 15-20 feet
Growth rate/form: medium/oval to
round
Cultivars: 'Ivory Silk' (more compact
growth form),
Additional notes: large creamy white
flowers June-July
Hardiness zone: 3
Height: 8-10 feet
Spread: 5-6 feet
Growth rate/form: slow/globe
Fall color: green
Cultivars: ‘Palibin’ (light purple flowers), ‘Bailbelle’
Tinkerbelle™ (a hybrid, pink flowers)
Additional notes: Very hardy; grafted on Japanese Tree
Lilac to produce a small tree form. Normally grown as a 5-6'
shrub on its own root.
PEKIN LILAC – Syringa pekinensis
Planting Code #2
Hardiness zone: 3-4
Height: 12-18 feet
Spread: 12-15 feet
Growth rate/form: medium/oval to round
Cultivars: ‘SunDak’ Copper Curls® NDSU introduction,
‘Morton’ China Snow®, ‘DTR124' Summer Charm
Additional notes: similar to Japanese Tree Lilac except
smaller and finer-textured leaves
PRAIRIE RADIANCE® WINTERBERRY
EUONYMUS–Euonymus bungeanus ‘Verona’
Planting Code#2
Hardiness zone: 3
Height: 12-15 feet
Spread: 15 feet
Growth rate/form: slow/rounded
Fall color: red
Cultivars: ‘Verona’ Prairie Radiance®, NDSU introduction
Additional notes: attractive pink fruit capsules
PRINCESS KAY PLUM – Prunus nigra ‘Princess
Kay’
Planting Code#2
Hardiness zone: 2
Height: 15 feet
Spread: 8-10 feet
Growth rate/form: medium/narrow
Fall color: orange to red
Cultivars: ‘Princess Kay’
Additional notes: showy white double flower clusters in
early May highly disease susceptible.
PURPLELEAF SANDCHERRY – Prunus x
cistena
Planting Code #2
Hardiness zone: 3
Height: 6-8 feet
Spread: 5-6 feet
Growth rate/form: medium/rounded
Fall color: red
Additional notes: Red leaf color with pink spring flowers
and purple fruit. Produces some suckers
(Small trees/deciduous – continued)
TATARIAN MAPLE — Acer tataricum
Planting Code #2
Hardiness zone: 3
Height: 15-20 feet
Spread: 10-15 feet
Growth rate/form: medium/oval
Fall color: yellow
Cultivars: ‘Actar’ Summer Splendor™, ‘Patdell’ Pattern
Perfect®
Additional notes: tolerates high pH soils and drought, red
seed clusters
TOBA HAWTHORN – Crataegus x mordenensis
‘Toba’
Planting Code #2
Hardiness zone: 3
Height: 12-25 feet
Spread: 12 feet
Growth rate/form:
slow/upright to rounded
Fall color: green
Cultivars: ‘Toba’, ‘Snowbird’
Additional notes: fragrant
large double pink flowers
(Toba),
double white flowers
(Snowbird); scattered thorns,
hardier than other hawthorns,
Toba is subject to fireblight
Medium Trees—Deciduous
AMUR CHOKECHERRY –
Prunus maackii
Planting Code #2
Hardiness zone: 3a
Height: 25-30 feet
Spread: 15-20 feet
Growth rate/form: medium/rounded
Fall color: brownish-yellow
Additional notes: very attractive
cinnamon-brown to coppery
exfoliating bark
CANADA RED CHERRY – Prunus virginiana
‘Schubert’
Planting Code#2
Hardiness zone: 2
Height: 20-25 feet
Spread: 18-25 feet
Growth rate/form: fast/oval to round
Fall color: red
Cultivars: ‘Schubert’, ‘Schubert Select’
Additional notes: red-purple leaf color with creamy white
spring flowers; susceptible to Black Knot; produces root
suckers
DAKOTA PINNACLE® Birch – Betula platyphylla
‘Fargo’
Planting Code #3
Hardiness zone: 3
Height: 25-30 feet
Spread: 7 to 8 feet ‘Fargo’
Growth rate/form: fast/columnar
Fall color: yellow
Additional notes: heat and drought tolerant, possible birch
borer resistance, tolerant of high pH soils, develops white
papery bark.
Prairie Vision Birch – Betula platiplhylla ‘VerDale’
Planting Code #3
Hardiness Zone – 3
Height 30 – 35 feet
Growth Rate Fast/spreading
Fall Color Yellow
Additional Notes: new NDSU introduction that has resisted
Bronze Birch Borer.
EUROPEAN MOUNTAIN-ASH – Sorbus
aucuparia
Planting Code #3
Hardiness zone: 2
Height: 20-30 feet
Spread: 20-25 feet
Growth rate/form: medium/rounded
Fall color: burgundy to burnt orange red
Additional notes: white flowers in spring,
develops orange/red fruit in late summer
retained into winter, attractive coppery-brown
bark color, requires well-drained soil
FLOWERING CRABAPPLES – Malus species
Planting Code #3
Hardiness zone: 3
Height: 15-25 feet
Spread: 15-25 feet
Growth rate/form:
medium/rounded,
dense
Fall color: yellowish
to orange
Cultivars: 'Red
Splendor' (25 feet);
'Thunderchild' (20
feet) purple foliage
during summer
months; 'Radiant'
(25 feet).
Additional notes (flowering crabapple): selections vary in
disease tolerance (fireblight and apple scab); check with local
nurseries for many other selections and disease resistance
information.
LAUREL WILLOW – Salix pentandra
Planting Code #4
Hardiness zone: 3
Height: 35-40 feet
Spread: 35-40 feet
Growth rate/form:
fast/rounded
Fall color: non
descript
Additional notes:
attractive glossy
green foliage
LITTLELEAF LINDEN – Tilia cordata
Planting Code #3
Hardiness zone: 3
Height: 30-40 feet
Spread: 30-40 feet
Growth rate/form:
medium/oval to pyramidal
Fall color: yellow
Cultivars: 'Greenspire’,
'Morden’, ‘Ronald’ Norlin™
‘Baileyi’
Shamrock®, Golden
Cascade (weeping form from
Canada)
Additional notes: very
fragrant flowers in late June
and
early July; pH adaptable
NANNYBERRY VIBURNUM – Viburnum lentago
Planting Code #3
Hardiness zone: 2
Height: 20 feet
Spread: 8-10 feet
Growth rate/form: medium/upright
Fall color: purplish red
Additional notes: native with white flowers in spring, glossy
foliage, blue-black berries; tree form available
OAKLEAF MOUNTAIN-ASH – Sorbus x hybrida
Planting Code #3
Hardiness zone: 3
Height: 30 feet
Spread: 20 feet
Growth rate/form: medium/oval
Fall color: rust
Additional notes: oak-like leaves, bright red fruit clusters,
fireblight resistance
IRONWOOD – Ostrya virginiana
American Hop-hornbeam
Planting Code #3
Hardiness zone: 3
Height: 25-35 feet
Spread: 20-30 feet
Growth rate/form:
slow/rounded
Fall color: yellow
Additional notes: tolerance
to most soil types, also
called
OHIO BUCKEYE – Aesculus glabra
Planting Code #4
Hardiness zone: 3
Height: 20-40 feet
Spread: 20-40 feet
Growth rate/form:
medium/rounded
Fall color: orange to brilliant
red
Cultivars: 'Autumn Splendor',
'Homestead' and ‘Bergeson’
Prairie Torch™ (NDSU
introduction) are improved
hybrids with superior foliage
qualities.
Additional notes: chestnut-like
inedible fruit very messy in the fall; large cream colored flowers
in spring; may need supplemental water
PRAIRIE CASCADE WILLOW – Salix x ‘Prairie
Cascade’
Planting Code #4
Hardiness zone: 3
Height: 35-40 feet
Spread: 35-40 feet
Growth rate/form: fast/weeping
Fall color: yellow
Cultivars: 'Prairie Cascade'
Additional notes: dull yellow
stem color, may require
supplemental water, good for
wet sites
Apple Serviceberry –
Amelanchier x
grandiflora
Planting Code #3
Hardiness zone: 3
Height: 20 feet
Spread: 15 feet
Growth rate/form:
medium/rounded
Fall color: red to orange
Cultivars: ‘Princess Diana’,
‘Autumn Brilliance
Additional notes: white flower
blossoms in spring, showy
purplish sweet edible fruit
Thornless Honeylocust – Gleditsia triacanthos
var. inermis ‘Harve’ Northern Acclaim ™
Planting Code #4
Hardiness Zone 3
Height 30 – 50 feet
Spread 25 – 35 feet
Growth Rate/Form Fast/open
spreading crown
Additional Notes: NDSU
introduction with superior
Hardiness and disease resistance.
QUAKING ASPEN – Populus tremuloides
Planting Code #1 (#3 DMC 39.08.007)
Hardiness zone: 2
Height: 30-40 feet
Spread: 20-30 feet
Growth rate/form: fast/pyramidal, full
Fall color: golden yellow
Additional notes: produces root suckers
Medium Trees—Conifers
AMERICAN ARBORVITAE – Thuja occidentalis
Planting Code #1
Hardiness zone: 3
Height: 15-25 feet
Spread: 6-8 feet
Growth rate/form: fast/narrow to pyramidal or oval
Cultivars: ‘Techny’, ‘Wareana’ (Siberian A), very hardy
ROCKY MOUNTAIN JUNIPER – Juniperus
scopulorum
Planting Code #1 (#3 DMC 39.08.007)
Hardiness zone: 3
Height: 15-25 feet
Spread: 15-20 feet
Growth rate/form: slow/narrow to wide pyramidal
Fall color: green
cultivars: 'Medora’, 'Moffetii’, 'Grizzly Bear’, ‘Blue Trail’,
‘Sutherland’, ‘Welchii’
Additional notes: many uses as a landscaping tree,
tolerates different soil types, watch for spider mites during
periods of hot, dry weather
SHOWY MOUNTAIN-ASH –Sorbus decora
Planting Code #3
Hardiness zone: 2
Height: 20 feet
Spread: 20 feet
Growth rate/form: slow/rounded
Fall color: red
Additional notes: smaller and more disease resistance than
European Mountain-ash
USSURIAN PEAR – Pyrus ussuriensis
Planting Code #3
Hardiness zone: 3
Height: 18-25 feet
Spread: 15-20 feet
Growth rate/form: slow to medium/rounded to upright
Fall color: yellow
Cultivars: ‘MorDak’ Prairie Gem® (rounded form, NDSU
introduction), ‘Bailfrost’ Mountain Frost™ (narrower form)
Large Trees—Deciduous
AMERICAN LINDEN – Tilia
Americana
Planting Code #3
Hardiness zone: 3
Height: 50+ feet
Spread: 30-45 feet
Growth rate/form: medium/round or
oblong, dense
Fall color: green to yellow
Cultivars: 'Dakota’: ‘Boulevard’,
‘American Sentry’, ‘Harvest Gold’,
Frontyard®, 'Redmond’
Additional notes: may need
supplemental water
AUTUMN BLAZE® MAPLE
Acer x freemanii ‘Jeffersred’
Planting Code #4
Hardiness zone: 4
Height: 50-60 feet
Spread: 40 feet
Growth rate/form: fast/rounded
Fall color: orange-red
Cultivars: ‘Jeffersred’
Additional notes: hybrid of silver and
red maple, drought tolerant
SIENNA GLEN® MAPLE Acer x freemanii
Planting Code #4
PAPER BIRCH – Betula papyrifera
Planting Code #3
Hardiness Zone: 3
Height 50 – 60 Feet
Spread up to 50 feet
Growth Rate Fast Spreading
Fall Color Orange Red
Additional Notes: Simular to Autumn Blaze but slightly larger,
more spreading crown
Hardiness zone: 2
Height: 35-40 feet
Spread: 35-45 feet
Growth rate/form: fast to
medium/oval
Fall color: yellow/gold
Cultivars: ‘Varen’ Prairie Dream®
(NDSU introduction with
bronze birch borer resistance)
Additional notes: requires moist site
with good drainage;
stressed trees may be susceptible to
bronze birch borer
damage, white exfoliating bark
BUR OAK Quercus macrocarpa
Planting Code #4
Hardiness Zone: 2
Height 50 + feet
Spread 30 – 60 feet
Growth Rate/form
medium/round, variable
COMMON HACKBERRY – Celtis occidentalis
Planting Code #4
Hardiness zone: 2
Height: 40-60 feet
Spread: 25-60 feet
Growth rate/form: medium/broad,
full, open
Fall color: yellow, yellow/green
Cultivars: 'Oahe’, 'Delta’,
‘Chicagoland’
Additional notes: adapted to a wide
range of soil types,
good disease resistance, dormant
nursery stock should be
sweated prior to planting
COTTONWOOD – Populus deltoides
Planting Code #1
Hardiness zone: 2
Height: 50-80 feet
Spread: 30-50 feet
Growth rate/form: fast/vase shaped, full
Fall color: yellow/green
Additional notes: female plants produce cotton (seed);
roots can cause problems with sewer lines, sidewalks, etc.
MANITOBA MAPLE (BOXELDER) – Acer
negundo
Planting Code #4
Hardiness zone: 2
Height: 30-50 feet
Spread: 30-70 feet
Growth rate/form: fast/rounded, dense
Fall color: green/yellow to red/brown
Cultivars: ‘Baron’ (male selection, Morden research station
introduction)
Additional notes: large spreading tree needs plenty of
space, very sensitive to 2,4-D herbicide
KENTUCKY COFFEETREE – Gymnocladus
dioica
Planting Code #4
Hardiness zone: 3b
Height: 30-45 feet
Spread: 25-35 feet
Growth rate/form: slow to
medium/vertically ascending
branches, narrow obovate crown
Fall color: yellow
Cultivars: ‘Espresso’, ‘Stately
Manor’ (U. Of Minnesota
introduction) additional notes:
adaptable to a wide range of soil
types; salt tolerant, slow to
establish
SILVER MAPLE – Acer saccharinum
Planting Code #1 (#4 DMC 39.08.007)
Hardiness zone: 3
Height: 50-70 feet
Spread: 30-65 feet
Growth rate/form: fast/oval to
rounded
Fall color: green/yellow
Cultivars: 'Northline’, 'Silver
Queen’, ‘Silver Cloud’ (newer
Canadian selection)
Additional notes: can cause
problems with sewer lines,
sidewalks, etc.; protected site
recommended; may need
supplemental water
Large Trees—Conifers
COLORADO SPRUCE – Picea pungens
Planting Code #1 (#4 DMC 39.08.007)
SIBERIAN LARCH – Larix
sibirica
Planting Code #1
(#3 DMC 39.08.007)
Hardiness zone: 3
Height: 50+ feet
Spread: 20-30 feet growth rate/form: slow/pyramidal
Fall color: green/blue
Cultivars: 'Glauca' (blue needles)
Additional notes: sensitive to environmental stress; avoid
heavy clay soils; prefers good drainage, use adequate
spacing to reduce needlecast disease
Hardiness zone: 2
Height: 50+ feet
Spread: 25-30 feet
Growth rate/form: medium to
fast/pyramidal
Fall color: yellow
Additional notes: deciduous conifer
(needles turn yellow in
fall and then drop)
BLACK HILLS SPRUCE – Picea glauca var.
densata
Planting Code #1 (#4 DMC 39.08.007)
Trees to Try—Deciduous
Hardiness zone: 3
Height: 50+ feet
Spread: 20-35 feet
Growth rate/form: slow/conical, dense
Fall color: green
Additional notes: avoid heavy clay soils, prefers good
drainage, good disease resistance
PONDEROSA PINE – Pinus ponderosa
Planting Code #1 (#4 DMC 39.08.007)
Hardiness zone: 3
Height: 50+ feet
Spread: 25 feet
Growth rate/form: slow to medium/columnar to open
Fall color: green
Additional notes: avoid heavy clay soils; prefers good
drainage
SCOTCH PINE – Pinus sylvestris
Planting Code #1 (#4 DMC 39.08.007)
Hardiness zone: 3
Height: 40-60 feet
Spread: 30-40 feet
Growth rate/form:
medium to
fast/pyramidal, open
Fall color: yellow
needles in winter
Additional notes:
avoid heavy clay
soils; prefers good
drainage, develops
flaky, peeling orange bark color with
age
AMUR CORKTREE – Phellodendron amurense
Planting Code #4
Hardiness zone: 3b
Height: 25-30 feet
Spread: 30 feet
Growth rate/form:
medium/vase shaped
Fall color: yellow
Cultivars: ‘Macho’, ‘His
Majesty’ (a cultivar of P.
sachalinense)
Additional notes: very
beautiful and unusual
bark pattern,
tolerates alkaline soils
BIRCH – Betula x ‘Crimson Frost’
Planting Code #3
Height: 30-35 feet
Spread: 20 feet
Growth rate/form: fast/broad-upright
Cultivars: ‘Royal Frost’ (newer purple-leaved cultivar)
Additional notes: striking reddish/purple leaves all summer,
white bark, tolerates moist heavy soils, possible borer
susceptibility, additional hardiness testing needed
BLACK CHERRY –
Prunus serotina
Planting Code #4
Hardiness zone: 4b
Height: 30-50 feet
Spread: 20-40 feet
Growth rate/form: slow to
medium/rounded at maturity
Fall color: yellow to red
Additional notes: white flowers
in spring; fruit good for
jellies; valuable wood, use only
hardiest seed sources
BLACK WALNUT –
Juglans nigra
Planting Code #4
Hardiness zone: 3b
Height: 40-50 feet
Spread: 50-75 feet
Growth rate/form: slow to
medium/oval to rounded, crown
somewhat open
Additional notes: avoid heavy
clay soils; prefers good drainage;
difficult to transplant
NORTHERN CATALPA – Catalpa speciosa
Planting Code #3
Hardiness zone: 4
Height: 50-60 feet
Spread: 35-40 feet
Growth rate/form: medium/upright oval
Additional notes: large lavender flowers in late June,
extremely drought tolerant, very large heart-shaped leaves,
borderline in winter hardiness
NORWAY MAPLE – Acer platanoides
Planting Code #4
JAPANESE ELM – Ulmus davidiana var.
japonica
Planting Code #4
Hardiness zone: 3
Height: 30-50 feet
Spread: 30-35 feet
Growth rate/form: medium/rounded
Fall color: yellow
Cultivars: 'Discovery'
Additional notes: attractive umbrella to vase-shaped form;
good shade tree
Hardiness zone: 4b
Height: 30-50 feet
Spread: 25-35 feet
Growth rate/form: slow medium/
columnar to broadly oval
Cultivars: ‘Crimson King’ (purple
leaves), ‘Crimson Sentry’ (purple
leaves), ‘Schwedler’, ‘Emerald
Queen’, ‘Pond’ Emerald
Lustre®, ‘Deborah’, borderline in
winter hardiness
RUSSIAN-OLIVE – Elaeagnus angustifolia
Planting Code #4
LARCH – Larix sp.
Planting Code #1
(#3 DMC 39.08.007)
Hardiness zone: 3
Height: 40-50 feet
Spread: 25-30 feet
Growth rate/form: fast/large pyramidal trees
Fall color: yellow color
Additional notes: deciduous conifer
(drops needles in the
fall): European (L. decidua);
American (L. laricina); and
Japanese (L. kaempferi)
MANCHURIAN APRICOT – Prunus armeniaca
var. mandshurica
Planting Code #3
Hardiness zone: 3
Height: 15-20 feet
Spread: 15-20 feet
Growth rate/form: medium/rounded
Fall color: yellow to red
Cultivars: 'Mandan’, 'Moongold’,
'Scout’, 'Sungold'
Additional notes: limited fruit
production; suitable for jelly
Hardiness zone: 3
Height: 15-25 feet
Spread: 15-25 feet
Growth rate/form: medium/rounded
Fall color: grayish green
Additional notes: adapted for a wide range of soils;
branches have thorns; susceptible to canker diseases, invasive
TOWER POPLAR – Populus x canescens
‘Tower’
Planting Code #1 (#3 DMC 39.08.007)
Hardiness zone: 3
Height: 50-65 feet
Spread: 10-15 feet
Growth rate/form: fast/narrow columnar
Fall color: yellow
Cultivars: ‘’Tower’
Additional notes: more resistant to canker diseases than
previous upright forms, suckers objectionably
Trees to Try—Conifers
ROCKY MOUNTAIN
DOUGLAS-FIR –
Pseudotsuga
Planting Code #1
(#4 DMC 39.08.007)
menziesii var. glauca
Hardiness zone: 3
Height: 40-80 feet
Spread: 12-20 feet
Growth rate/form:
medium/pyramidal
Additional notes: prefers
wind protection, the variety
glauca, native to the Rocky Mountains, is hardier than the
species P. menziesii
EASTERN WHITE PINE – Pinus strobus
Planting Code #1 (#4 DMC 39.08.007)
NORWAY SPRUCE – Picea abies
Planting Code #1 (#4 DMC 39.08.007)
Hardiness zone: 3
Height: 40-80 feet
Spread: 25-30 feet
Growth rate/form: fast/pyramidal when young, pendulous
as it matures.
Additional notes: questionable drought tolerance, need to
water during drought
RED PINE – Pinus resinosa
Planting Code #1 (#4 DMC 39.08.007)
Hardiness zone: 3
Height: 50-80 feet
Spread: variable
Growth rate/form: medium/pyramidal to oval
Fall color: scaly orange/red bark
Additional notes: intolerant of alkaline and saline soils
Hardiness zone: 3
Height: 50-80 feet
Spread: 20-40 feet
Growth rate/form: fast/pyramidal when young, irregular at
maturity
Additional notes: intolerant to saline and alkaline soils, fine
textured needles
JACK PINE – Pinus banksiana
Planting Code #1 (#4 DMC 39.08.007)
Hardiness zone: 3
Height: 35-50 feet
Spread: 20-35 feet
Growth rate/form: slow to medium/pyramidal when young,
open spreading at maturity
Fall color: green
Additional notes: avoid heavy clay soils; prefers good
Drainage
Woody Plants to Avoid
Due to: lack of hardiness, potential for
diseases/insects and other factors:
! Dwarf Alberta Spruce
! American elm (Other than recommended
cultivars)
! Austree Willow
! Bald-cypress
! Black Oak
! Callery Pear
! Emerald Arborvitae
! Fraser Fir
! Lombardy Poplar
! Red Maple (new Minnesota cultivars may merit
testing)
! Red Oak
! Robusta Poplar
! Siberian Elm
! Siouxland Poplar
! Sugar Maple (New cultivars including “Fall
Fiesta” may merit testing)
! White Oak
! Weeping Birch
! Any Ash “Fraxinus” Species due to
susceptibility to Emerald Ash Borer (does not
include any Mountain Ash ).
Public Works Director
City of Dickinson, Dickinson, ND
(701) 456-7022
Gary.Zuroff@dickinsongov.com
City Forester
City of Dickinson, Dickinson, ND
(701) 456-7979
All planting along right – of – way and boulevards require a
permit from the City of Dickinson.
The City of Dickinson uses the following Planting Code for plantings along
public right – of – way and boulevards; any trees with a designation of
#1 would be not recommended for planting,
#2 not recommended for any area less than three feet in width,
#3 not recommended for areas less than five feet in width, and
#4 not recommended for areas less than six feet in width.
APPLICATION FOR PERMIT TO PLANT TREES ON PUBLIC STREET RIGHT-OFWAY
DICKINSON FORESTRY DEPARTMENT
3411 Public Works Blvd
PHONE: (701) 456-7979
DICKINSON NORTH DAKOTA 58601
Date _____________________________________ 20________
The undersigned hereby makes application for a permit to plant trees on public right-of-way in the City of Dickinson, and hereby agrees to
make the proposed planting as described below:
Property Owner ______________________________________________________________________ To Be Installed By
__________________________________________________________
ALL TREES PLANTED ON STREET BOULEVARDS shall be Nursery grown, not less than 6 feet high if MEDIUM or LARGE species, or 5 feet
high if SMALL species (See Approved Tree Selection Guide for the City of Dickinson.) Stem and crown shall be of equal proportions.
LOCATION AND DESCRIPTION OF PROPOSED PLANTING
Address __________________________________________________________________
Boulevard Width ___________feet
Overhead
Utilities (YES)__________ (NO) ____________________________________________________________________________________________________
Species __________________________________________________________________
No. of Trees _______________
Planting
Method ________________________________________________________________________________________________________________________
PROPER PLANTING IS IMPORTANT – SEE attached instructions. DO NOT CHANGE SPACING OR TREE SPECIES WITHOUT
PERMISSION OF THE DICKINSON FORESTRY DEPARTMENT.
HAVE UNDERGROUND UTILITIES LOCATED PRIOR TO PLANTING. There is no charge to private citizens for this service and
underground locating is required before digging.
NORTH DAKOTA’S ONE CALL BEFORE YOU DIG NUMBER IS:
1-800-795-0555
THE PERSON TO WHOM THIS PERMIT IS ISSUED agrees to do the work according to the terms of this permit and the applicable provisions of
the City of Dickinson Code of Ordinances, and agrees to be personally and directly responsible for all damages to persons or property arising or
growing out of the planting hereby permitted and authorized to be done, and agrees to indemnify and hold the City of Dickinson harmless from any
loss, claim, damages, or expense arising therefrom. Said person further agrees to replace, to the satisfaction of the City Forester, all disturbances to
the boulevard created by work authorized under this permit.
PERMIT TO PLANT TREES ON PUBLIC STREET RIGHT-OF-WAY
THE PLANTING LOCATION has been duly inspected and the proposed planting conforms to all applicable regulations and standards of the City of
Dickinson. The undersigned further agrees to become familiar with the location of all underground utilities before planting.
PERMIT SHALL BE IN EFFECT FOR 30 DAYS FROM THE DATE OF ISSUENCE.
Planting trees as
described above: X___________________________________________________
Approved and Issued by: _______________________________________________
PLEASE RETURN THIS PERMIT TO CITY HALL AFTER PLANTING.
* FOR OFFICE USE ONLY *
Tree planting has been completed and inspected as specified in the above application by:
City Forester
Date ________________________
Not In Compliance _____________
1. Planting hole should be about twice the diameter of the container, root ball or root spread so that
the roots can grow easily in “loosened” soil.
2. Prune off dead, diseased, broken or twisted roots on bare root plants.
3. Usually, soil dug from the planting hole is satisfactory for backfilling. In sandy soil, amending with
¼ peat moss or well-rotted manure to ¾ topsoil may be beneficial. Break up large clumps and
discard any debris or stones.
4. Remove burlap from top1/3 of root ball on balled and bur lapped trees after tree is placed in
planting hole. Remove wire baskets or any containers before planting. Remove all twine or
rope from around the trunk.
5. The original ground level in the nursery (the soil line on bare root trees or the top of the root ball)
shall be 1”-2” above the finished ground level where planted. (See diagram.)
6. Water down planting soil several times while backfilling roots to eliminate air pockets.
7. Mulch at least a 24” diameter area around the tree trunk with wood chips, bark, coarse gravel or
small rock (maintain rock/gravel mulch 1-2” away from the trunk). Mulch will reduce the moisture
loss, moderate soil temperature and reduce settling and cracking of soil. (Also, keeps lawn
mowers away from tender tree trunks.) Mulch should be 2”-4” deep. (See diagram.)
8. Staking the tree may be necessary on taller, whippy trees. Use wooden 2”x2”’s or steel posts.
Fabric straps or nylon stockings should be used to protect the tree. (See diagram.) Remove
stakes after 1-½ years.
9. Prune off only dead or broken branches
after planting. Do not remove the central
leader.
10.
Water thoroughly after planting. Water
thoroughly once every 7-10 days for at least two
growing seasons. (A thorough watering should wet
the soil to a depth of at least 24”.) More frequent
watering may keep the soil too wet and rot the
roots on newly planted trees. Automatic lawn
sprinklers that run every 3-4 days can drown your
tree if the soil remains wet constantly. In this case,
plant the tree a little higher and slope the soil
away from the tree trunk so that water will run off
away from the tree.